Question

Someone please explain how to use the Hardy-Weinberg equation??

Answer 1

do you know the equation??

Answer 2

Yeah, just don't understand what each part of it means and how it's used to answer questions.

Answer 3

hmmm. it says that genotype and allele frequency remains undisturbed unless and until there is any mutation.
consider a gene it may be either aa, AA or Aa
let frequency of a = p
let the frequency of A = Q
p+q=1
the above eqn is written considering the allele from single parent.
frequency of aa = p^2
frequency of AA = q^2
frequency of Aa = 2pq (possible combinations)

so the eqn becomes
P^2 + q^2 + 2PQ = 1